Earth Science: November 2017 Archives

"An extensive report published by the federal government Friday asserts that humans are the primary driver of climate change, causing higher temperatures, sea level rise, agriculture problems and more. The report, the first volume of the Fourth National Climate Assessment, is years in the making, and involved contributions from more than a dozen federal agencies. It is meant to be an authoritative assessment of the current state of climate change science. Many of the report's conclusions directly contradict the Trump administration's positions on climate change."

"This assessment concludes, based on extensive evidence, that it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century. For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence. In addition to warming, many other aspects of global climate are changing, primarily in response to human activities."

"The report was approved for release by the White House, but the findings come as the Trump administration is defending its climate change policies on several fronts. ... While there were pockets of resistance to the report in the Trump administration, there was little appetite for a knockdown fight over climate change among Mr. Trump's top advisers, who are intensely focused on passing a tax reform bill - an effort they think could determine the fate of his presidency."

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